package com.itheima.config;

import com.itheima.common.JacksonObjectMapper;
import com.itheima.filter.LoginCheckInterceptor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

import java.util.List;

@Slf4j
@Configuration
// 使用拦截器 原来是继承WebMvcConfigurationSupport 后来是 实现
public class WebMvcConfig  implements WebMvcConfigurer {
//    @Autowired
//    LoginCheckInterceptor loginCheckInterceptor;
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
        registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
        log.info("静态资源访问成功~~");
    }

//    @Override
//    public void addInterceptors(InterceptorRegistry registry) {
//        registry.addInterceptor(loginCheckInterceptor)
//                 .addPathPatterns("/**")
//                .excludePathPatterns("/employee/login")
//                .excludePathPatterns("/employee/logout")
//                .excludePathPatterns("/backend/**")
//                .excludePathPatterns("/front/**")
//                .excludePathPatterns("/user/sendMsg")
//                .excludePathPatterns("/user/login");
//    }
    /**
     * 扩展mvc框架的消息转换器
     * @param converters
     */
    @Override
    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        log.info("扩展消息转换器...");
        //创建消息转换器对象
        MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
        //设置对象转换器，底层使用Jackson将Java对象转为json
        messageConverter.setObjectMapper(new JacksonObjectMapper());
        //将上面的消息转换器对象追加到mvc框架的转换器集合中
        converters.add(0,messageConverter);
    }
}
